condition mean min max ZT0-3 151.0 151.0 151.0 ZT4-7 179.5 179.5 179.5 ZT8-11 165.6 165.6 165.6 ZT12-15 209.3 209.3 209.3 ZT16-19 220.7 220.7 220.7 ZT20-23 138.9 138.9 138.9